SURFACE MODIFICATION OF PSF/TIO2 MEMBRANES USING SILANE COUPLING AGENTS AND DC PLASMA TECHNIQUE

The effects of two silane coupling agents (KH550, KH570) and three coupling agents of organic titanate (JSC, CT136 and NTC401) on the surface modification of superfine Al2O3 powders were tested and compared. The results showed that three coupling agents of organic titanate succeeded in modify the surface of Al2O3 particle from hydrophilic property to lipophilicity, while two silane coupling agents failed. The group changes of the surface were confirmed by IR spectrum, which also indicated that chemical absorption occurred between NTC401 and the powders surface, but for JSC and CT136 mainly occurred physical absorption. SEM photos of the powders showed that agglomeration-free particles could be obtained when the powders were treaded by NTC401. However, when treated by JSC or CT136 the powders tended to be secondly agglomerated. The proper coupling mechanism was analyzed, and it was thought that space structure of octahedral complex of titanium ion with six ligands could effectively impede agglomeration.

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Surface Modification of Magnesium Carbonate via Three Silane Coupling Agents

Journal of Nanoengineering and Nanomanufacturing ◽

10.1166/jnan.2011.1033 ◽

2011 ◽

Vol 1 (3) ◽

pp. 292-297 ◽

Cited By ~ 1

Author(s):

Min Guo ◽

Tan Guo ◽

Quan Li ◽

Xiushen Ye ◽

Zhijian Wu

Keyword(s):

Surface Modification ◽

Magnesium Carbonate ◽

Coupling Agents ◽

Silane Coupling Agents ◽

Silane Coupling

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Surface modification of TiO2 nanoparticles with silane coupling agents

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2011.11.033 ◽

2012 ◽

Vol 413 ◽

pp. 273-279 ◽

Cited By ~ 219

Author(s):

Jie Zhao ◽

Maria Milanova ◽

Marijn M.C.G. Warmoeskerken ◽

Victoria Dutschk

Keyword(s):

Surface Modification ◽

Tio2 Nanoparticles ◽

Coupling Agents ◽

Silane Coupling Agents ◽

Silane Coupling

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The Effect of Surface Modification of TiO2 on Mechanical Properties of Polyethylene Composite Film

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.93-94.300 ◽

2010 ◽

Vol 93-94 ◽

pp. 300-303 ◽

Cited By ~ 9

Author(s):

N. Tangchantra ◽

Jittiporn Kruenate ◽

Chuanchom Aumnate ◽

Thammarak Sooksomsong

Keyword(s):

Mechanical Properties ◽

Surface Modification ◽

Composite Films ◽

Titanium Isopropoxide ◽

Nano Particles ◽

Coupling Agents ◽

Silane Coupling Agents ◽

Polyethylene Composite ◽

Silane Coupling ◽

Measurement Surface

To achieve a proper dispersion of nano-particles polymer matrix and to yield a better compatibility between the nano-particles and polymeric material, the use of different coupling agents for surface modification of nano-particle is recommended. In this research, surface of TiO2 was modified by hydrolytic condensation of titanium isopropoxide with three different silane coupling agents, hexadecyl trimethoxysilane (HTMS), triethoxyvinylsilane (TEVS) and aminopropyl trimethoxysilane (APS). The grafting of silane coupling agents on the TiO2 nano-particles surface was characterized using TGA and FTIR techniques. Mechanical properties of polyethylene composite films were evaluated via tensile strength measurement. Surface morphology of the particle was studied by SEM and TEM. The result showed that surface treatment TiO2 nano-particles with TEVS could improve dispersibility of TiO2 and showed the optimum mechanical properties.

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